[go: up one dir, main page]

WO2019111175A1 - Prothèse de distraction et de fusion de facettes - Google Patents

Prothèse de distraction et de fusion de facettes Download PDF

Info

Publication number
WO2019111175A1
WO2019111175A1 PCT/IB2018/059666 IB2018059666W WO2019111175A1 WO 2019111175 A1 WO2019111175 A1 WO 2019111175A1 IB 2018059666 W IB2018059666 W IB 2018059666W WO 2019111175 A1 WO2019111175 A1 WO 2019111175A1
Authority
WO
WIPO (PCT)
Prior art keywords
elements
connector
facet
facet distraction
base
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/IB2018/059666
Other languages
English (en)
Inventor
Uri Arnin
Ofer Levy
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zygofix Ltd
Original Assignee
Zygofix Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zygofix Ltd filed Critical Zygofix Ltd
Priority to JP2020531150A priority Critical patent/JP7231945B2/ja
Priority to CN201880078847.8A priority patent/CN111465370B/zh
Priority to EP18834006.1A priority patent/EP3700472B1/fr
Priority to BR112020010549-0A priority patent/BR112020010549B1/pt
Publication of WO2019111175A1 publication Critical patent/WO2019111175A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/44—Joints for the spine, e.g. vertebrae, spinal discs
    • A61F2/4405—Joints for the spine, e.g. vertebrae, spinal discs for apophyseal or facet joints, i.e. between adjacent spinous or transverse processes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws or setting implements
    • A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/70—Spinal positioners or stabilisers, e.g. stabilisers comprising fluid filler in an implant
    • A61B17/7062—Devices acting on, attached to, or simulating the effect of, vertebral processes, vertebral facets or ribs ; Tools for such devices
    • A61B17/7064—Devices acting on, attached to, or simulating the effect of, vertebral facets; Tools therefor
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B2017/00477—Coupling
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws or setting implements
    • A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B2017/681—Alignment, compression, or distraction mechanisms

Definitions

  • the present invention relates generally to spinal implants and prostheses, and particularly to a facet distraction and fusion prosthesis designed to be placed between the two bony elements of a spinal facet joint.
  • Another problem is the significant variability of the geometry of the facet joints between different patients and different spinal levels of the same patient. It is difficult to adapt the spinal implant to the varying geometry.
  • PCT Patent Application WO 2017/046667 describes a facet distraction prosthesis that includes an array of facet distraction base elements connected to each other by one or more connector elements. Diagonally adjacent base elements are connected to each other by a set of connector elements which intersects with another set of connector elements that connects another pair of diagonally adjacent base elements.
  • the connector elements are flexible so that the base elements can flex with respect to each other and adapt to geometry of a facet joint.
  • the present invention seeks to provide an improved spinal prosthesis that can be placed between the two bony elements of a spinal facet joint and accommodate the significant variability of the geometry of the facet joints between different patients and different spinal levels of the same patient.
  • the spinal prosthesis expands on the capabilities and structure of the prostheses of PCT Patent Application WO 2017/046667.
  • a facet distraction prosthesis including an array of facet distraction base elements, adjacent ones of the base elements being connected to each other by a set of connector elements located at the adjacent ones of the base elements, wherein the set of connector elements includes a male connector having an at least partial cylindrical or spherical contour that is received in, and articulates with, an at least partial cylindrical or spherical recess of a female connector, so that adjacent ones of the base elements can bend in multiple degrees of freedom about different bending axes with respect to each other and adapt to a geometry of a facet joint.
  • each of the base elements includes two male connectors that protrude from adjacent, perpendicular sides of the base element, and two female connectors that protrude from two other adjacent, perpendicular sides of the base element and each of the male connectors is parallel to a corresponding one of the female connectors.
  • the male connector and the female connector form a ball and socket joint.
  • the male connector and the female connector form a universal joint.
  • the male connector and the female connector form a pin joint.
  • the male connector is part of the base element.
  • the male connector is not part of the base element.
  • the male connector is a cross of two cylindrical elements.
  • each the set of connector elements there are at least two female connectors that are axially separated from each other.
  • One or more keels may extend from upper and/or lower faces of the base elements.
  • Fig. 1A is a simplified pictorial illustration of a facet distraction prosthesis, constructed and operative in accordance with a non-limiting embodiment of the present invention, with cylindrical connector elements;
  • Fig. 1B is a simplified pictorial illustration of a base element of the facet distraction prosthesis of Fig. 1A;
  • Fig. 1C is a simplified plan view illustration of the facet distraction prosthesis of Fig. 1A;
  • Fig. 1D is a simplified side view illustration of the facet distraction prosthesis of Fig. 1A;
  • Fig. 1E is a simplified front view illustration of the facet distraction prosthesis of Fig. 1A;
  • Fig. 1F is a simplified pictorial illustration of the facet distraction prosthesis of Fig. 1A in a bent orientation
  • Fig. 2A is a simplified pictorial illustration of a facet distraction prosthesis, constructed and operative in accordance with another non-limiting embodiment of the present invention, with spherical connector elements (e.g., ball and socket joints);
  • spherical connector elements e.g., ball and socket joints
  • Fig. 2B is a simplified side view illustration of the facet distraction prosthesis of Fig. 2A;
  • Fig. 2C is a simplified pictorial illustration of a base element of the facet distraction prosthesis of Fig. 2A;
  • Fig. 2D is a simplified front view illustration of the facet distraction prosthesis of Fig. 2A;
  • Fig. 2E is a simplified plan view illustration of the facet distraction prosthesis of Fig. 2A;
  • Fig. 3A is a simplified pictorial illustration of a facet distraction prosthesis, constructed and operative in accordance with another non-limiting embodiment of the present invention, with universal joint connector elements;
  • Fig. 3B is a simplified pictorial illustration of a male connector element of the facet distraction prosthesis of Fig. 3A;
  • Fig. 3C is a simplified pictorial illustration of a base element of the facet distraction prosthesis of Fig. 3A
  • Fig. 3D is a simplified side view illustration of the facet distraction prosthesis of Fig. 3 A;
  • Fig. 3E is a simplified plan view illustration of the facet distraction prosthesis of Fig. 3 A;
  • Fig. 3F is a simplified pictorial illustration of the facet distraction prosthesis of Fig. 3A in a bent orientation
  • Fig. 4A is a simplified pictorial illustration of a facet distraction prosthesis, constructed and operative in accordance with another non-limiting embodiment of the present invention, with pin joint connector elements;
  • Fig. 4B is a simplified pictorial illustration of a base element of the facet distraction prosthesis of Fig. 4A;
  • Fig. 4C is a simplified pictorial illustration of a male connector element of the facet distraction prosthesis of Fig. 4A;
  • Fig. 4D is a simplified plan view illustration of the facet distraction prosthesis of Fig. 4A.
  • Fig. 4E is a simplified side view illustration of the facet distraction prosthesis of Fig. 4A.
  • FIG. 1A-1F illustrate a facet distraction and fusion prosthesis 10, constructed and operative in accordance with a non-limiting embodiment of the present invention.
  • the facet distraction prosthesis 10 includes an array of facet distraction base elements 12, adjacent base elements 12 being connected to each other by a set of connector elements 14, which are located at adjacent base elements.
  • the set of connector elements 14 includes a male connector 16 having an at least partial cylindrical contour 18 that is received in, and articulates with, an at least partial cylindrical recess 22 of a female connector 24. In this manner, adjacent base elements 12 can flex with respect to each other and adapt to geometry of a facet joint.
  • Base elements of all embodiments may have any geometrical shape, such as but not limited to, circular, elliptic, round, square, rectangular, triangular, hexagonal, polygonal irregular, etc.
  • Connector elements of all embodiments may be made of the same material as base elements 12 or of a different material.
  • the materials include, without limitation, a stainless steel alloy, titanium alloy, shape memory or superelastic material, plastic and others, or any combination thereof.
  • each base element 12 may have two male connectors 16 that protrude from adjacent, perpendicular sides of base element 12, and two female connectors 24 that protrude from two other adjacent, perpendicular sides of base element 12.
  • One male connector 16 is parallel to one female connector 24.
  • Figs. 1A and 1F illustrate facet distraction prosthesis 10 in flat and bent orientations, respectively.
  • the prosthesis can bend in multiple degrees of freedom about different bending axes.
  • the facet distraction prosthesis 10, as well as the other embodiments of the invention, may include one or more keels 17 extending from upper and/or lower faces of the base elements, which bite into spinal structure for increasing the holding force that holds the prosthesis in place in the spinal structure.
  • keels 17 may be perpendicular to the top or bottom surfaces of the base element 12.
  • keels 17 may be tilted and non-perpendicular to the top or bottom surfaces of the base element 12.
  • the keels may be shaped to be easily inserted but difficult to be pulled back, in order to prevent migration.
  • FIG. 2A-2E illustrate a facet distraction and fusion prosthesis 30, constructed and operative in accordance with a non-limiting embodiment of the present invention.
  • the facet distraction prosthesis 30 includes an array of facet distraction base elements 32, adjacent base elements 32 being connected to each other by a set of connector elements 34, which are located at adjacent base elements.
  • the set of connector elements 34 includes a male connector 36 having an at least partial spherical contour 38 that is received in, and articulates with, an at least partial spherical recess 42 of a female connector 44, thereby forming a ball and socket joint. In this manner, adjacent base elements 32 can flex with respect to each other and adapt to geometry of a facet joint.
  • Each base element 32 may have two male connectors 36 that protrude from adjacent, perpendicular sides of base element 32, and two female connectors 44 that protrude from two other adjacent, perpendicular sides of base element 32.
  • One male connector 36 is parallel to one female connector 44.
  • Figs. 3A-3F illustrate a facet distraction and fusion prosthesis 50, constructed and operative in accordance with a non-limiting embodiment of the present invention.
  • the facet distraction prosthesis 50 includes an array of facet distraction base elements 52, adjacent base elements 52 being connected to each other by a set of connector elements 54, which are located at adjacent base elements.
  • the set of connector elements 54 includes a male connector 56 having a cylindrical contour 58 that is received in, and articulates with, an at least partial cylindrical recess 62 of a female connector 64.
  • the male connector 56 is a cross of two cylindrical elements, which by articulating with the recesses 62 of female connector 64, forms a universal joint. In this manner, adjacent base elements 52 can flex with respect to each other and adapt to geometry of a facet joint.
  • the male connector 56 is not part of the base element, but is located at the base element.
  • Each base element 52 may have two female connectors 64 that are separated from each other along a vertical axis and another two female connectors 64 that are separated from each other along a vertical axis on adjacent, perpendicular sides of base element 52.
  • Each base element 52 may have two female connectors 64 that are separated from each other along a horizontal axis and another two female connectors 64 that are separated from each other along a horizontal axis on adjacent, perpendicular sides of base element 52.
  • FIG. 4A-4E illustrate a facet distraction and fusion prosthesis 70, constructed and operative in accordance with a non-limiting embodiment of the present invention.
  • the facet distraction prosthesis 70 includes an array of facet distraction base elements 72, adjacent base elements 72 being connected to each other by a set of connector elements 74, which are located at adjacent base elements.
  • the set of connector elements 74 includes a male connector 76 having a cylindrical contour 78 that is received in, and articulates with, a cylindrical recess 82 of a female connector 84.
  • the male connector 76 is a pin that forms a pivot joint when inserted in the recesses 82 of female connector 84. In this manner, adjacent base elements 72 can flex with respect to each other and adapt to geometry of a facet joint.
  • each base element 72 may have two female connectors 84 that are axially separated from each other and another two female connectors 84 that are axially separated from each other on adjacent, perpendicular sides of base element 72.
  • Each base element 72 may have one relatively longer female connector 84 and another relatively longer female connector 84 on adjacent, perpendicular sides of base element 72. The relatively longer female connectors 84 fit into the gap between the female connectors 84 that are axially separated from each other.
  • the facet distraction prostheses of the invention may have a leading face that first enters the area of the facet joints when installing the prosthesis.
  • the leading face may have a tapered shape as in Fig. 2B, which facilitates insertion of the prosthesis.
  • the joint member at the trailing face may be used for grasping the prosthesis for easy retrieval, adjustment or withdrawal.
  • any of the embodiments of the invention may be filled with bone graft to promote fusion of the bony elements to each other.

Landscapes

  • Health & Medical Sciences (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Neurology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Veterinary Medicine (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Public Health (AREA)
  • Animal Behavior & Ethology (AREA)
  • Surgery (AREA)
  • Cardiology (AREA)
  • Vascular Medicine (AREA)
  • Transplantation (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Prostheses (AREA)

Abstract

Une prothèse de distraction de facettes comprend un réseau d'éléments de base de distraction de facettes, reliés les uns aux autres par un ensemble d'éléments de raccord situés au niveau d'éléments de base adjacents. L'ensemble d'éléments de raccord comprend un raccord mâle ayant un contour au moins partiellement cylindrique ou sphérique qui est reçu dans, et s'articule avec, un évidement cylindrique ou sphérique au moins partiel d'un raccord femelle, de telle sorte que des éléments adjacents parmi les éléments de base peuvent s'incurver dans de multiples degrés de liberté autour de différents axes de courbure l'un par rapport à l'autre et s'adapter à la géométrie d'un joint de facette.
PCT/IB2018/059666 2017-12-06 2018-12-05 Prothèse de distraction et de fusion de facettes Ceased WO2019111175A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP2020531150A JP7231945B2 (ja) 2017-12-06 2018-12-05 椎間伸延および癒合プロテーゼ
CN201880078847.8A CN111465370B (zh) 2017-12-06 2018-12-05 小面分离和融合假体
EP18834006.1A EP3700472B1 (fr) 2017-12-06 2018-12-05 Prothèse de distraction et de fusion de facettes
BR112020010549-0A BR112020010549B1 (pt) 2017-12-06 2018-12-05 Prótese de desvio de faceta

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US15/832,922 US10507045B2 (en) 2017-12-06 2017-12-06 Facet distraction and fusion prosthesis
US15/832,922 2017-12-06

Publications (1)

Publication Number Publication Date
WO2019111175A1 true WO2019111175A1 (fr) 2019-06-13

Family

ID=65023933

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2018/059666 Ceased WO2019111175A1 (fr) 2017-12-06 2018-12-05 Prothèse de distraction et de fusion de facettes

Country Status (5)

Country Link
US (1) US10507045B2 (fr)
EP (1) EP3700472B1 (fr)
JP (1) JP7231945B2 (fr)
CN (1) CN111465370B (fr)
WO (1) WO2019111175A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060241758A1 (en) * 2005-04-20 2006-10-26 Sdgi Holdings, Inc. Facet spacers
US20110060366A1 (en) * 2007-06-29 2011-03-10 Stephen Heim Facet Joint Implant and Related Methods
WO2017046667A1 (fr) 2015-09-14 2017-03-23 Uri Arnin Prothèse de distraction et de fusion de facettes

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1452096A (en) * 1973-05-22 1976-10-06 Nat Res Dev Endoprosthetic wrist joint devices
US20090326589A1 (en) * 2008-06-26 2009-12-31 Lemoine Jeremy J Hinged plate for dynamic stabilization
MX2011004026A (es) 2008-10-16 2011-06-22 Kinetic Spine Technologies Inc Protesis para articulacion de faceta.
US8951254B2 (en) * 2008-10-21 2015-02-10 Ww Technology Ag Method for fusing a human or animal joint as well as fusion device and tool set for carrying out the method
US8663293B2 (en) 2010-06-15 2014-03-04 Zyga Technology, Inc. Systems and methods for facet joint treatment
WO2012154653A1 (fr) * 2011-05-10 2012-11-15 Synthes Usa, Llc Cage d'interférence pour facette
CN104970905B (zh) * 2014-04-02 2018-02-23 宝楠生技股份有限公司 具立体网格体的脊椎小面关节融合固定器
US10485664B2 (en) * 2015-01-09 2019-11-26 Formae, Inc. Rigid segmented flexible anchors
CN105832449A (zh) * 2016-06-08 2016-08-10 李川 一种连接稳固的高耐磨指间关节假体

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060241758A1 (en) * 2005-04-20 2006-10-26 Sdgi Holdings, Inc. Facet spacers
US20110060366A1 (en) * 2007-06-29 2011-03-10 Stephen Heim Facet Joint Implant and Related Methods
WO2017046667A1 (fr) 2015-09-14 2017-03-23 Uri Arnin Prothèse de distraction et de fusion de facettes

Also Published As

Publication number Publication date
US20190167316A1 (en) 2019-06-06
EP3700472B1 (fr) 2021-03-31
CN111465370A (zh) 2020-07-28
EP3700472A1 (fr) 2020-09-02
JP2021506357A (ja) 2021-02-22
CN111465370B (zh) 2023-04-28
BR112020010549A2 (pt) 2020-11-17
JP7231945B2 (ja) 2023-03-02
US10507045B2 (en) 2019-12-17

Similar Documents

Publication Publication Date Title
US11911288B2 (en) Stand alone interbody spinal system
US11129726B2 (en) Facet distraction and fusion prosthesis
JP4510836B2 (ja) 自在継手を有する人工椎間板
US10130486B2 (en) Interbody implantation system and method
US20030083748A1 (en) Intervertebral fusion cage
US11229528B2 (en) Spinal implant
WO2010008353A1 (fr) Cage de fusion intervertébrale moins invasive
EP3700472B1 (fr) Prothèse de distraction et de fusion de facettes
KR20240110455A (ko) 추간 유합 기기
BR112020010549B1 (pt) Prótese de desvio de faceta

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 18834006

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2020531150

Country of ref document: JP

Kind code of ref document: A

ENP Entry into the national phase

Ref document number: 2018834006

Country of ref document: EP

Effective date: 20200528

NENP Non-entry into the national phase

Ref country code: DE

REG Reference to national code

Ref country code: BR

Ref legal event code: B01A

Ref document number: 112020010549

Country of ref document: BR

ENP Entry into the national phase

Ref document number: 112020010549

Country of ref document: BR

Kind code of ref document: A2

Effective date: 20200526